Started by shweetpickens, September 16, 2016, 11:57:35 PM
Quote from: derfdog15 on November 09, 2016, 12:36:40 PMQuote from: StealBlueSho on November 09, 2016, 12:24:17 PMQuote from: derfdog15 on November 09, 2016, 12:16:43 PMQuote from: StealBlueSho on November 09, 2016, 12:04:13 PMSo I was under the impression that when you flash your ECU it clears out the KAM during the flash... This is why your fuel trims, OAR, and adaptives get reset after a flash. That's why after a flash your transmission shifts harder because everything gets reset... Think about the reverse if your KAM didn't get reset then you flash... Then your fuel trims could potentially be VERY off causing all kinds of issues... Your OAR could be off causing too much spark advance which leads to knocking... Your transmission wouldn't have baseline starting point to adjust the adaptives...Guessing at this, but based on my logging, after a flash, most learned values get reset..Sent from my Nexus 6P using TapatalkMost adaptive parameters do get reset after a flash, however, items like OAR do not reset due to a flash. While not necessary a major concern, this could be an issue if you go from an E blend tune to a straight 93 octane tune, just before changing fuels, or something similar. My Recommendation is to do a KAM reset upon major modifications, like stated, or upon fuel type changes, especially if going to worse fuel. It takes only a few seconds to do one with an SCT (if that is how you're tuned) and doesn't take super long for the car to relearn. Better safe than sorry IMOYou OAR DOES get reset after a flash. That is a fact... Sent from my Nexus 6P using TapatalkMaybe my SCT X4 is just buggy then...I have never seen OAR change after a flash, either from stock or from custom tune to custom tune. However, when I did a manual KAM reset, it went to 0, and learned again.
Quote from: StealBlueSho on November 09, 2016, 12:24:17 PMQuote from: derfdog15 on November 09, 2016, 12:16:43 PMQuote from: StealBlueSho on November 09, 2016, 12:04:13 PMSo I was under the impression that when you flash your ECU it clears out the KAM during the flash... This is why your fuel trims, OAR, and adaptives get reset after a flash. That's why after a flash your transmission shifts harder because everything gets reset... Think about the reverse if your KAM didn't get reset then you flash... Then your fuel trims could potentially be VERY off causing all kinds of issues... Your OAR could be off causing too much spark advance which leads to knocking... Your transmission wouldn't have baseline starting point to adjust the adaptives...Guessing at this, but based on my logging, after a flash, most learned values get reset..Sent from my Nexus 6P using TapatalkMost adaptive parameters do get reset after a flash, however, items like OAR do not reset due to a flash. While not necessary a major concern, this could be an issue if you go from an E blend tune to a straight 93 octane tune, just before changing fuels, or something similar. My Recommendation is to do a KAM reset upon major modifications, like stated, or upon fuel type changes, especially if going to worse fuel. It takes only a few seconds to do one with an SCT (if that is how you're tuned) and doesn't take super long for the car to relearn. Better safe than sorry IMOYou OAR DOES get reset after a flash. That is a fact... Sent from my Nexus 6P using Tapatalk
Quote from: derfdog15 on November 09, 2016, 12:16:43 PMQuote from: StealBlueSho on November 09, 2016, 12:04:13 PMSo I was under the impression that when you flash your ECU it clears out the KAM during the flash... This is why your fuel trims, OAR, and adaptives get reset after a flash. That's why after a flash your transmission shifts harder because everything gets reset... Think about the reverse if your KAM didn't get reset then you flash... Then your fuel trims could potentially be VERY off causing all kinds of issues... Your OAR could be off causing too much spark advance which leads to knocking... Your transmission wouldn't have baseline starting point to adjust the adaptives...Guessing at this, but based on my logging, after a flash, most learned values get reset..Sent from my Nexus 6P using TapatalkMost adaptive parameters do get reset after a flash, however, items like OAR do not reset due to a flash. While not necessary a major concern, this could be an issue if you go from an E blend tune to a straight 93 octane tune, just before changing fuels, or something similar. My Recommendation is to do a KAM reset upon major modifications, like stated, or upon fuel type changes, especially if going to worse fuel. It takes only a few seconds to do one with an SCT (if that is how you're tuned) and doesn't take super long for the car to relearn. Better safe than sorry IMO
Quote from: StealBlueSho on November 09, 2016, 12:04:13 PMSo I was under the impression that when you flash your ECU it clears out the KAM during the flash... This is why your fuel trims, OAR, and adaptives get reset after a flash. That's why after a flash your transmission shifts harder because everything gets reset... Think about the reverse if your KAM didn't get reset then you flash... Then your fuel trims could potentially be VERY off causing all kinds of issues... Your OAR could be off causing too much spark advance which leads to knocking... Your transmission wouldn't have baseline starting point to adjust the adaptives...Guessing at this, but based on my logging, after a flash, most learned values get reset..Sent from my Nexus 6P using Tapatalk
Quote from: SHOdded on November 09, 2016, 01:28:07 PMOk so maybe a diff with the 2013+?
